There are two postcards waiting to be sent again. One is a new official, to Poland, a drawing of windmills. The other one is an official to Germany - this official has been travelling for almost a month already, and still has not arrived, so I will send a new postcard. The new one is a picture of a cow in dusk and myst.
One of my officials is almost expired, but I will not send another one. The receiver has not been online for a month, has only received and sent a few postcards, and does not respond to my message if he really did not receive it. So the chance is too big that it will not be registered on the site even when he does receive the postcard.